A new spatial distribution map of δ18O in Antarctic surface snow

Details A new spatial distribution map of δ18O in Antarctic surface snow A new spatial distribution map of δ18O in Antarctic surface snow

Mar 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009georl..3606501w&link_type=abstract

Geophysical Research Letters, Volume 36, Issue 6, CiteID L06501

Statistics

Computation

1

Cryosphere: Ice Sheets, Biogeosciences: Isotopic Composition And Chemistry (1041, 4870), Computational Geophysics: Modeling (4255), Cryosphere: Snow (1827, 1863)

Scientific paper

We developed a gridded map of surface Antarctic snow isotopic composition using a recently compiled database and the modified Bowen and Wilkinson (2002) model using latitude and elevation as the primary predictors while also incorporating regional and local deviations based on available isotopic data. The map was generated using a 1-km digital elevation model grid data as the model input. The average of the absolute deviations between observations and predictions was about 0.8‰, and the standard deviation is 0.9‰. The resulting δ 18O patterns reproduced correctly spatial isotopic gradients with respect to geographical characteristics, as well as climatic features.

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